adolph riedel



o@ l 'me emmerde.

c. ADOLPH RIEDEL, oFPHiLADELPHIA, PENNSYLVANIA.

Latas Patat No. 87,294, ama Fama/ry 23, 1869; maagd/RWM IMPROVEMENT-INSTEAM-GENERATORS.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it mag/concerne The nature of my invention consists of acast-iron steam-boiler, made in sections of one or more hollow.

rims, with hollow spokes, as hereinafter described.

In the accompanying drawings, which make a part of this specificationlFigure 1 is an end elevation of the improved boiler, made of threesections, A. l

Figure 2 is a vertical section, at the line x x of fig. l.

Figure 3 is a vertical section of a modified fori-n of the boiler, inw-hich the sectionsA are placed horizontally.

Figure 4 is a side view of one of the sections A. Like letters, in allthe figures, indicate the same parts. AAA represent three sectionscomposing the boiler'. The rims B of the sections are represented, inthe drawings, of circular form on their periphery, yet I do notconfine-myself to making them of that form, as they may be ofelliptical, or other form,l and still answer; and insteadof the rimsbeing circular in their crosssections, they may be corrugated, or theymay be composed ot' a succession of chambers, of globular or other form.

There are hollow spokes C connected with the rims B, or with a pluralityof rims inthe same plane, if desired. Y

There are manholes a in` the outer periphery of the rims, which areprovided with doors b, that are confined by bolts c, which pass 'clearthrough two opposite doors. The doors may, if desired, be conlined withshort bolts inthe usual manner. Theman-hles are not only intended forthe purpose of cleaning outthe boiler, but p also for the transmissionof light throughout the interior of the same.

For the complete accomplishment of this purpose, I construct thesections with an even number of spokes, so'that light may pass clearthrough. This gives the inspector or workman an opportunity of seeing,from the outside, the exact condition of the boiler. I t desired, hollowcross-bars may take the place ofthe spokes.;

yet I prefer the former, as they give greater strength to.

the sections, and cause the light to strike more thoroughly on theinterior of the rim.

At the bottom ofthe sections there are cross-tubes or pipes, e, whichform a drum, D, when the sections are connected together.

They are held together by means of the bolts d, or

may be secured by means of short bolts, by havingv flanges on theirends.

D is a steam-drum, placed above the sections A, and connected therewithby means of the steam-pipes E,

made in sections, and connected by means of the couplings F, the innerends of the short pieces E being secured into the necks f, onthe upperedge of the sections i A, and the necks f of the drum D.

The drum has a projection, g, whose a'nge, h, is bolted to the ange hofthe projection g3 This construct-ion and arrangement ofthe pipes E giveflexibility thereto, to compensate for any variations which-may occur bythe expansion and contraction i of the boiler.

The pipes Eni-ay be made of cast-iron, when reqilired, in which case thecouplings are dispensed with, the pipes having flanges that are confinedtogether by flanges on the necks f and f ofthe sections A and drum D.

The condensed steam is conveyed down from the drum D into the sectionsA, by means of pipes on the outside, or a vertical opening may extendthrough the` necks g, and g into the sections A..

Said sections have lugs, fi, which rest on the ledges 7' of the walls II of the furnace, as seen in iig. 2.

They are also constructed with annular ribs It, which nearly touch eachother, there being open spaces l between them, to allow forthe-expansion of the metal. If desired, the ribs 7.7 may be dispensedwith but when they are used, there should be doors at thebot'tom of thesections, toprovide for cleaning the latter.

One of the pipes, J, is for the connection of a safet 1- valve, and theother for the steam-discharge pipe.

The spokes G, or hollow cross-bars, may have libs running in anydirection, to form return-fines.

A check-valve may be set between each contiguous section, in anyconvenient place, to cut off the communication between the sections, incase of' an explosion.

A modified form of the boiler is represented in lig 3,-wl1ich is avertical section.

The sections A are lconfined' together by means o1 bolt-s m, which passthrough the hollow bosses u, which form a continuous tube or pipe.

K is the smoke-pipe.

A face View of the section A is given in ng. 4.

I do not claim anything contained in the patents of Augustus W. Newell,dated December 24, 1867 of George W. Field, dated June 23, 1868 andThomas S. Glogston, `dated J une 18, 1867 but 1. The arrangement ofthehollowg'ims B and hollow spokes G, with the liexible .pipes E, 'a'shereinoefore described.

2. The construction of the annular vribs k, when ar. ranged with therims B, for the'purpose of makingY return-iues, substantiallyasdescribed. l 3. The arrangement of the man-hole plates lf and rods c,with the rims B and hollow spokes G, substantially as herein described.

In testimony that the above is my invention, I have hereunto set my handandaixed my seal, this-5th day of June, 1868 l Gr. ADOLPH RIEDEL. [1..s.]

Witnesses: V

STEPHEN UsTIoK, JOHN WHITE.

